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The slant height of a right circular cone is the distance from any point on the circle of its base to the apex via a line segment along the surface of the cone. It is given by r 2 + h 2 {\displaystyle {\sqrt {r^{2}+h^{2}}}} , where r {\displaystyle r} is the radius of the base and h {\displaystyle h} is the height.
A frustum's axis is that of the original cone or pyramid. A frustum is circular if it has circular bases; it is right if the axis is perpendicular to both bases, and oblique otherwise. The height of a frustum is the perpendicular distance between the planes of the two bases.
The lateral surface volume of a right spherical cone is = where is the radius of the spherical base and is the slant height of the cone (the distance between the 2D surface of the sphere and the apex).
L E is the slant height of the side in the E-field direction L H is the slant height of the side in the H-field direction d is the diameter of the cylindrical horn aperture L is the slant height of the cone from the apex λ is the wavelength. An optimum horn does not yield maximum gain for a given aperture size.
If the radius of the sphere is denoted by r and the height of the cap by h, the volume of the spherical sector is =. This may also be written as V = 2 π r 3 3 ( 1 − cos φ ) , {\displaystyle V={\frac {2\pi r^{3}}{3}}(1-\cos \varphi )\,,} where φ is half the cone angle, i.e., φ is the angle between the rim of the cap and the direction ...
For a right circular cone, the surface area is = where = + is the slant height. Regular right symmetric n-gonal bipyramids: Bipyramid name Digonal bipyramid ...
Studies show that keeping your head at the appropriate height—about 2 inches (or 5 centimeters) off the bed—helps air flow into the lungs and stabilizes your respiratory function. However ...
English: This file illustrates a cone and its main caracteristics. Labeled "r" is the radius of the circular base. Labeled "h" is the height, from center of base to apex, of the cone. Labeled "c", is the slant height of the cone. Labeled "θ" is the angle between the height and the slant height.